javascript - 缺少的 , before 声明在哪里？

Question

在这个功能中，当我使用 firebug 时，我得到“syntaxerror：missing ; before var url 行上的语句。

    function makeRequest(){
                 var url= "contr_entry_pkg.sales_center_dropdown?&pnSalesCenterID=document.getElementById("pnSalesCenterID").value +&pvCurrCd='||CURRDEF||'";
                ajaxReq = (window.XMLHttpRequest)? new XMLHttpRequest() : new ActiveXObject("MSXML2.XMLHTTP")

                ajaxReq.open("POST",url ,true);
                ajaxReq.onreadystatechange =currencychange;         
                ajaxReq.send()         
        } 

Answer 1

"尝试在您的 url 字符串中转义：

var url= "contr_entry_pkg.sales_center_dropdown?&pnSalesCenterID=document.getElementById(\"pnSalesCenterID\").value +&pvCurrCd='||CURRDEF||'";

这将修复语法错误，尽管我认为你的意思是这样的：

var url= "contr_entry_pkg.sales_center_dropdown?&pnSalesCenterID=" + 
         document.getElementById("pnSalesCenterID").value +
         "&pvCurrCd='||CURRDEF||'";

此外，您应该（尽管不是严格要求）在每个语句后放置分号：

ajaxReq = (window.XMLHttpRequest)? new XMLHttpRequest() : new ActiveXObject("MSXML2.XMLHTTP"); // <-- added ; here
...
ajaxReq.send(); // <-- added ; here

Answer 2

function makeRequest(){
                 var url= "contr_entry_pkg.sales_center_dropdown?&pnSalesCenterID=document.getElementById(\"pnSalesCenterID\").value +&pvCurrCd='||CURRDEF||'";
                ajaxReq = (window.XMLHttpRequest)? new XMLHttpRequest() : new ActiveXObject("MSXML2.XMLHTTP")

                ajaxReq.open("POST",url ,true);
                ajaxReq.onreadystatechange =currencychange;         
                ajaxReq.send();      
        }